CVE-2026-75062Public exploitNetwork attack vector

Unauthenticated Python execution via unsandboxed model output

Published Aug 26, 2026 · Updated Aug 27, 2026

Eval injection in Google Langfun before 0.1.2 allows remote attackers to execute arbitrary Python code through crafted prompt input. The default lf.query Python protocol passes model-generated expressions to pyglove.coding.evaluate with sandbox disabled, while its AST filter permits calls without restricting callable names or builtins. An attacker needs influence over content that reaches the model prompt; successful injection runs with the host application's privileges and can read secrets, alter files, and issue network requests.

CVSS severity9.2
Critical
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Eval injection in Google Langfun before 0.1.2 allows remote attackers to execute arbitrary Python code through crafted prompt input. The default lf.query Python protocol passes model-generated expressions to pyglove.coding.evaluate with sandbox disabled, while its AST filter permits calls without restricting callable names or builtins. An attacker needs influence over content that reaches the model prompt; successful injection runs with the host application's privileges and can read secrets, alter files, and issue network requests.

The record

CVE
CVE-2026-75062
Published
Aug 26, 2026
Updated
Aug 27, 2026
Vendor
Google Cloud
Product
Langfun
Classifications
CWE-95, CWE-1188, CAPEC-242, T1059.006
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.0.1 <0.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Langfunversion=0.0.1 <0.1.2

Published CVSS scores

9.2Google CNACVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-95Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
CWE-1188Initialization of a Resource with an Insecure Default
CAPEC-242Code Injection
T1059.006Command and Scripting Interpreter Python

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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